What could be the low-temperature limit of atomic layer deposition of platinum using MeCpPtMe and oxygen?

We explore the low-temperature limit of atomic layer deposition of Pt using MeCpPtMe and O. We reveal that by supplying a sufficiently high O exposure, highly dispersed and thermally stable Pt sub-nanometer clusters can be deposited onto the surface of P25 TiO nanoparticles even at room temperature by atmospheric-pressure ALD.

Variable temperature TEM mapping of the thermodynamically stable element distribution in bimetallic Pt-Rh nanoparticles.

We report here the first variable temperature transmission electron microscopy (TEM) study on smaller Pt-Rh nanoparticles (≤24 nm) under vacuum conditions. Well-defined 50 at% Pt/50 at% Rh Pt-Rh solid solution and Rh(core)-Pt(shell) nanoparticles, obtained colloidal synthesis routes, were investigated between room temperature and 650 °C to elucidate the tendency of elemental mixing/segregation. Key findings are that Pt-Rh nanoparticles <13 nm are stable in a solid solution configuration over the entire studied temperature range, whereas nanoparticles >13 nm tend to segregate upon cooling.

Concussion-related visual memory and reaction time impairment in college athletes improved after osteopathic manipulative medicine: a randomized clinical trial.

Context: Concussion is an acute, transient disruption in brain function due to head injury. Previous studies suggest osteopathic manipulative medicine (OMM) improved recovery from concussion.

Objectives: The hypothesis was that new-onset impairments (NOI) of neurological functions identified by Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) will improve more so after OMM than after concussion-education.

Innovative approach to controlled Pt-Rh bimetallic nanoparticle synthesis.

Precise control of the elemental composition and distribution in bimetallic nanoparticles is of great interest for both fundamental studies and applications, in catalysis. We present a new innovative and facile synthesis strategy for the production of true solid solution Pt Rh nanoparticles. This constitutes a development of the established heat-up method, where undesired shell formation is fully suppressed, despite utilizing metal precursors with different reaction rates.

Cranial Strain Patterns Associated With Concussions.

Context: Concussions can cause cognitive impairment, somatic symptoms, and behavioral changes. Symptoms may vary in severity, depending on the degree of traumatic force. Due to the biomechanical nature of this trauma, cranial somatic dysfunctions may commonly be seen in patients with concussion.